I had actually been wondering that too. It may be because our design was changing so much, or it may be something as simple as that we didn't supply proper plans. In any case, I have never heard the actual answer.

It would be awesome to have a White Knight model plane which could launch an SS1 model rocket . I guess it would be very tricky to get the rocket to go up though, instead of shooting off horizontally from underneath the plane.

It might be posible to shove a model out of the back of the plane, like the Air Launch in last weeks Av Week. It made the cover. The photographer took the picture that made the cover in close up--making the tiny air launch rocket look like Sea Dragon.